Lillesden Estate Mansion Escape

Lillesden Estate Mansion, later The Lillesden (or Bedgebury) School for
Girls is an abandoned mansion. It is located in the south of Hawkhurst,
Kent in UK. You have gone to the mansion with your friends to take
photography. You are left alone by your friends and you got stuck up in
that area. No one can help you here because they are not aware of that.
So, can you please find the related objects and solve the puzzles to
find the solution to open the main door and escape from the Lillesden
Estate Mansion.